Inputs - adept technology MV User Manual

Chapter 12

Inputs

The 32 input channels are arranged in four groups of eight. Each group is
electrically opto-isolated from the other groups and from the VME bus circuitry.
The eight inputs within each group share a common ground.
The inputs are accessed through the two 26-pin D-sub input connectors on the
front of the board. Each connector provides access to two input groups. Each
group requires 10 pins: 8 input signals and 2 ground references. An input is
turned on by providing a positive potential on its input pin relative to the ground
pin of its group. This type of input is considered "sinking". That is, to turn it on,
current must flow into the input pin.
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;< - $)'7 7
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,)53 -   2 -)- #
The input current specifications are provided for reference; voltage sources are
typically used to drive the inputs.
194
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Table 12-1. DIO Input Circuit Specifications
A
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Adept MV Controller, User's Guide, Rev. B
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Inputs